Preparation of C30 concrete and its adsorption performance for Cs(I)
Creators
- 1. Chengdu University of Technology, Chengdu, Sichuan (China). Nuclear Technology Automation Process Academy
- 2. Southwest University of Science and Technology, Mianyang, Sichuan (China). School of National Defense Science and Technology
- 3. China Nuclear Power Engineering Co Ltd, Shenzhen, Guangdong (China)
Description
The preparation of C30 concrete for a cavernous waste repository under construction in China and its Cs(I) adsorption performance were investigated. The mix ratio of C30 concrete was cement:sand:gravel:water = 1:1.87:3.05:0.55. Three characterization analyses showed that C30 concrete has a good crystal structure, a large specific surface area and the presence of many -OH, HCO3-, CO32-, SiO42- groups and other groups. Adsorption experiments showed that the adsorption equilibrium was reached within 4 h, and pH had little effect on adsorption; several ions (K+, Ca2+, Mg2+, Cl-, NO3-, and SO42-) inhibited adsorption. The adsorption was more in line with the pseudo-second-order kinetic model and the Langmuir isothermal model. Thermodynamic analysis indicates that adsorption is endothermic and stochastic. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 331
- Journal Issue
- 5
- Journal Page Range
- p. 2135-2145
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 53064114
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ADSORPTION; CESIUM; CHINA; CONCRETES; IONS; PH VALUE; RADIOACTIVE WASTE STORAGE; SAMPLE PREPARATION
- Descriptors DEC
- ALKALI METALS; ASIA; BUILDING MATERIALS; CHARGED PARTICLES; ELEMENTS; MANAGEMENT; MATERIALS; METALS; RADIOACTIVE WASTE MANAGEMENT; SORPTION; STORAGE; WASTE MANAGEMENT; WASTE STORAGE
Optional Information
- Notes
- 33 refs.